Panda Cub Dies in National Zoo

The panda cub born in the D.C. National Zoo on 9-16-2012 died this morning for unknown reasons. Zoo officials made the discovery after hearing distress sounds from the mother. Per the article:

Panda keepers and volunteers "heard a distress vocalization from the mother, Mei Xiang, at 9:17 am and notified the veterinarian staff immediately," zoo officials said. "The staff were able to safely retrieve the cub for an evaluation at 10:22 am. Veterinarians immediately performed CPR and other life-saving measures but the cub did not respond," the statement said. At first observation, veterinarians said there was no outward sign of trauma, no outward sign of infection, and the cub was "in good body condition," weighing just under 100 grams.